perf evsel: Introduce perf_evsel__{str,int}val methods
Wrappers to the libtraceevent routines, so that we can further reduce
the surface contact perf builtins have with it.
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-rtmgzptvrifzjxqwb9vs6g1b@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 06f7644..1506ba0 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -10,6 +10,7 @@
#include <byteswap.h>
#include <linux/bitops.h>
#include "asm/bug.h"
+#include "event-parse.h"
#include "evsel.h"
#include "evlist.h"
#include "util.h"
@@ -1000,3 +1001,37 @@
return 0;
}
+
+char *perf_evsel__strval(struct perf_evsel *evsel, struct perf_sample *sample,
+ const char *name)
+{
+ struct format_field *field = pevent_find_field(evsel->tp_format, name);
+ int offset;
+
+ if (!field)
+ return NULL;
+
+ offset = field->offset;
+
+ if (field->flags & FIELD_IS_DYNAMIC) {
+ offset = *(int *)(sample->raw_data + field->offset);
+ offset &= 0xffff;
+ }
+
+ return sample->raw_data + offset;
+}
+
+u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample,
+ const char *name)
+{
+ struct format_field *field = pevent_find_field(evsel->tp_format, name);
+ u64 val;
+
+ if (!field)
+ return 0;
+
+ val = pevent_read_number(evsel->tp_format->pevent,
+ sample->raw_data + field->offset, field->size);
+ return val;
+
+}
